GNU Radio 3.6.5 C++ API

gr::blocks::copy_impl Class Reference

#include <copy_impl.h>

Inheritance diagram for gr::blocks::copy_impl:
gr::blocks::copy gr_block gr_basic_block gr_msg_accepter gruel::msg_accepter

List of all members.

Public Member Functions

 copy_impl (size_t itemsize)
 ~copy_impl ()
void forecast (int noutput_items, gr_vector_int &ninput_items_required)
 Estimate input requirements given output request.
bool check_topology (int ninputs, int noutputs)
 Confirm that ninputs and noutputs is an acceptable combination.
void set_enabled (bool enable)
bool enabled () const
int general_work (int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
 compute output items from input items

Constructor & Destructor Documentation

gr::blocks::copy_impl::copy_impl ( size_t  itemsize)
gr::blocks::copy_impl::~copy_impl ( )

Member Function Documentation

bool gr::blocks::copy_impl::check_topology ( int  ninputs,
int  noutputs 
) [virtual]

Confirm that ninputs and noutputs is an acceptable combination.

ninputsnumber of input streams connected
noutputsnumber of output streams connected
true if this is a valid configuration for this block.

This function is called by the runtime system whenever the topology changes. Most classes do not need to override this. This check is in addition to the constraints specified by the input and output gr_io_signatures.

Reimplemented from gr_basic_block.

bool gr::blocks::copy_impl::enabled ( ) const [inline, virtual]

Implements gr::blocks::copy.

void gr::blocks::copy_impl::forecast ( int  noutput_items,
gr_vector_int ninput_items_required 
) [virtual]

Estimate input requirements given output request.

noutput_itemsnumber of output items to produce
ninput_items_requirednumber of input items required on each input stream

Given a request to product noutput_items, estimate the number of data items required on each input stream. The estimate doesn't have to be exact, but should be close.

Reimplemented from gr_block.

int gr::blocks::copy_impl::general_work ( int  noutput_items,
gr_vector_int ninput_items,
gr_vector_const_void_star input_items,
gr_vector_void_star output_items 
) [virtual]

compute output items from input items

noutput_itemsnumber of output items to write on each output stream
ninput_itemsnumber of input items available on each input stream
input_itemsvector of pointers to the input items, one entry per input stream
output_itemsvector of pointers to the output items, one entry per output stream
number of items actually written to each output stream, or -1 on EOF. It is OK to return a value less than noutput_items. -1 <= return value <= noutput_items

general_work must call consume or consume_each to indicate how many items were consumed on each input stream.

Reimplemented from gr_block.

void gr::blocks::copy_impl::set_enabled ( bool  enable) [inline, virtual]

Implements gr::blocks::copy.

The documentation for this class was generated from the following file: